Excretory Tubules

Excretory tubules are the general name for the renal tubules of the pre-renal, primary and secondary kidneys, in which urine is formed.

There are several types of excretory tubules in the kidneys:

1. Prerenal tubules - begin from the renal corpuscle and flow into the collecting ducts. They reabsorb water, glucose, amino acids and other useful substances.

2. The tubules of the primary kidney are a continuation of the tubules of the preference. Here, the reabsorption of water and salts continues, as well as the secretion of hydrogen ions, which gives the urine an acidic environment.

3. The tubules of the secondary kidney are the final stage of urine formation. Additional reabsorption of water and release of potassium, sodium and chloride ions occurs.

Thus, in the excretory tubules, secondary urine is formed from primary urine, in which the concentration of beneficial substances is reduced and the concentration of toxic substances is increased. This allows you to maintain homeostasis in the body.

Excretory tubules are the general name for the renal ducts of the anterior kidney, as well as the primary and secondary kidneys, in which urine is formed. They form the largest system in the human body and perform an important function in cleansing the blood of metabolic products and regulating the fluid balance in the body.

The excretory tubules filter the blood and convert the material it contains into urine, which is then excreted from the body through the urinary system. In the excretory tubules, the process of removing nutrients and water from the blood occurs, which allows you to maintain an optimal balance of water and electrolytes in the body, as well as avoid dehydration.

There are three types of excretory canaliculi: the preference, primary and secondary urinary canals. Passing through them, the blood undergoes a filtration process, is separated from the components it contains and exits into the bladder. The primary and secondary excretory systems are different in that the latter have a more developed apparatus that supports the regulation of a number of substances that are essential for the body.

Each type of excretory duct includes several types of nephrons, which form multiple loops that work in parallel to increase productivity. Filtered by the kidneys, the fluid in the blood is converted into urine and appears in the upper part of the bladder. From it, urine flows through the ureter into the urinary canal,